Align LoanFacility field name to AAA documents

pay-in-decode.go

 			pi := loan.PayIn{}
 			pi.Id = 0
 			pi.Ts = row.Period
-			pi.Amount = row.LoanAmount
+			pi.Amount = row.LoanFacility
 			pi.Lender = loan.Lender_AAA
 			pi.Settlement = row.Settlement
 			pi.Balance = row.Balance

payIn-AAA.go

 */
 
 type PayInAAARow struct {
-	Period     time.Time
-	LoanNumber string
-	Settlement time.Time
-	LoanAmount float64
-	Balance    float64
-	InTrail    float64
+	Period       time.Time
+	LoanNumber   string
+	Settlement   time.Time
+	LoanFacility float64
+	Balance      float64
+	InTrail      float64
 }
 
 func (m *AiDecodeIncome) decodeAAAPdf(raw string) (e error) {
 	if len(el) >= 5 {
 		m.LoanNumber = el[0]
 		m.Settlement, _ = time.Parse("02-Jan-06", el[1])
-		m.LoanAmount = m.currencyToFloat64(el[2])
+		m.LoanFacility = m.currencyToFloat64(el[2])
 		m.Balance = m.currencyToFloat64(el[3])
 		m.InTrail = m.currencyToFloat64(el[len(el)-1]) //last element
 		valid = true